talk to the guys at aamco transmission, i just bought a th400 tranney with lifetime warranty, without a core for 800.00, the np 205, i believe it was either 4 wheeler magazine or petersons that had an article on how to tell the difference last month, i would start scavaging the old parts yards in kentucky, might be a little drive, but there are a lot of treasures in those yards!!!<p>-abe<br>

here might be a little more help for you if you plan to scavenge the parts yards.<p>check out chucks chevy pages, also If the rig had full time 4x4 it is a np203 if it is a chevy 70's model with man trans odds are it is a 205 auto trans odds are it is a 203. Anyway.......you might find additional help as far as identifying a donor vehicle specs by visiting chucks website<p>-abe<br>

here might be a little more help for you if you plan to scavenge the parts yards.<p>check out chucks chevy pages, also If the rig had full time 4x4 it is a np203 if it is a chevy 70's model with man trans odds are it is a 205 auto trans odds are it is a 203. Anyway.......you might find additional help as far as identifying a donor vehicle specs by visiting chucks website<p>-abe<br>

an easy way to i.d. the 205 is by the shifter rod sticking thru the floor. the 205has a round rod coming out of the floor topped by whtever handle the previous owner chose to install. it is the only t-case with a round handle<p>----------<br>big Jim<br>

i forgot .look for a case with a bracket bolted on the passenger side that bolts to the frame. my first case didnt have that ,after breaking 2 adapters(?)and 1 transmission in half i realized the bracket was a necessity for survival under less than perfect conditions<p>----------<br>big Jim<br>

The NP 205 has a drain plug on the back. The NP 203, has no drain plug. There is a photo of each case, on my web pages, under the &quot;Parts Identification&quot; heading.<p>~Chuck<br><p>----------<br>Chuck's Chevy Truck Pages - Snowplowing Central<br>http://members.aol.com/csmith669/plowcentral.html